| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
If side x = 15cm, side y = 9cm, and side z = 12cm what is the perimeter of this triangle?
| 29cm | |
| 24cm | |
| 31cm | |
| 36cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 15cm + 9cm + 12cm = 36cm
Solve for z:
6z - 6 < 8 + 9z
| z < -\(\frac{2}{3}\) | |
| z < -\(\frac{1}{2}\) | |
| z < -4\(\frac{2}{3}\) | |
| z < -1\(\frac{2}{3}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.
6z - 6 < 8 + 9z
6z < 8 + 9z + 6
6z - 9z < 8 + 6
-3z < 14
z < \( \frac{14}{-3} \)
z < -4\(\frac{2}{3}\)
If the base of this triangle is 7 and the height is 9, what is the area?
| 90 | |
| 91 | |
| 31\(\frac{1}{2}\) | |
| 78 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 7 x 9 = \( \frac{63}{2} \) = 31\(\frac{1}{2}\)
On this circle, a line segment connecting point A to point D is called:
radius |
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chord |
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diameter |
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circumference |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
A quadrilateral is a shape with __________ sides.
2 |
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5 |
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3 |
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4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.